Water treatment


CO2 can be used to purify water and Skytree works together with a manufacturer and distributor of fresh water generators to create a novel CO2 supply method. These new generators will be used on board ships and offshore constructions.

Reverse Osmosis

Recent decades have witnessed rapid developments in decentralized water treatment, which transforms salt, fresh or brackish water into potable water. A process that turns out to be particularly suitable for creating safe drinking water is Reverse Osmosis (RO). This process removes bacteria and viruses, as well as salts and other solutes.

The disadvantage of this technique is that it also removes substances such as calcium, magnesium and bicarbonate, all of which are necessary to establish water stability and taste.

The process of re-inserting these minerals into drinking water is referred to as remineralization, a process in which CO2 plays a key role. CO2 is injected into treated water to dissolve lime, increase hardness and stabilize the level of acidity.

Clean drinking water

According to the UN around 783 million people around the world do not have access to clean drinking water.

Water availability is expected to decrease in many regions. The future global agricultural water consumption alone is estimated to increase by 20% by 2050, and will be even greater in the absence of any technological progress or policy intervention.

Offshore remineralisation units

Skytree works together with a market-leading manufacturer and distributor of fresh-water generators to create a new generation of remineralisation units for ships and offshore constructions.

Remineralisation currently requires high pressure CO2 cylinders subject to strict transportation and safety rules. In addition, replacement cylinders cannot always be delivered in time in remote locations such as at sea.

The goal of our collaboration is to develop a drinking water treatment system whereby CO2 is scrubbed from the ambient air to be directly reused in the remineralization process. Our units are a reliable, environmentally friendly, location-independent solution that guarantee high drinking water standards without need of pressurized gas cylinders.